Which aspect is NOT adjustable during a reacquisition of an EnCase evidence file?

When reacquiring an EnCase evidence file, the evidence number is not adjustable because it is a unique identifier assigned to that specific piece of evidence. This number is essential for maintaining the integrity and accountability of the evidence within the forensic process. It helps ensure that the proper chain of custody is established and maintained throughout the investigation. Adjusting the evidence number could lead to confusion or misidentification of the evidence in future examinations or legal proceedings, which is why it is fixed.

On the other hand, details such as the investigator's name, block size, and file segment size can indeed be modified during the reacquisition process. The investigator's name might be updated to reflect who is currently handling the evidence, while both block size and file segment size can be adjusted according to specific needs or preferences for the data acquisition method. This flexibility allows investigators to optimize the forensic process based on their current operational requirements.